<template>
	<view class="cart-container" v-if="cart.length !== 0">
    <!-- 收货地址组件 -->
    <my-address></my-address>
		<!-- 商品列表的标题区域 -->
    <view class="cart-title">
      <!-- 左侧的图表 -->
      <uni-icons type="shop" size="18"></uni-icons>
      <!-- 右侧的文本 -->
      <text class="cart-title-text">购物车</text>
    </view>
    
    <!-- 循环渲染购物车里面的商品信息 -->
 
    <uni-swipe-action>
      <block v-for="(goods,i) in cart" :key="i">
        <uni-swipe-action-item :options="options" @click="swipeItemClickHandler(goods)">
            <my-goods :goods="goods" :show-radio="true" :show-num="true" @radio-change="radioChangeHandler" @num-change="numberchange"></my-goods>
        </uni-swipe-action-item>
      </block>
    </uni-swipe-action>
    
    <!-- 自定义的计算组件 -->
    <my-settle></my-settle>
	</view>
  
  <!-- 空白购物车 -->
  <view class="empty-cart" v-else>
    <image src="/static/cart_empty@2x.png" class="empty-image"></image>
    <text class="tip-text">空空如也~</text>
  </view>
</template>

<script>
  import badgeMix from '@/mixins/tabbar-badge.js'
  import {mapState, mapMutations} from 'vuex'
  
	export default {
    mixins:[badgeMix],
    computed:{
      ...mapState('m_cart',['cart'])
    },
		data() {
			return {
				options:[{
          text:'删除',
          style:{
            backgroundColor:'#C00000'
          }
        }]
			};
		},
    methods:{
      ...mapMutations('m_cart',['updateGoodsState','updateGoodsCount','removeGoodsById']),
      radioChangeHandler(e){
        this.updateGoodsState(e)
      },
      numberchange(e){
        this.updateGoodsCount(e)
      },
      // 删除商品
      swipeItemClickHandler(goods){
        this.removeGoodsById(goods.goods_id)
      }
    }
	}
</script>

<style lang="scss">
.cart-title{
  height: 40px;
  display: flex;
  align-items: center;
  padding-left: 5px;
  border-bottom: 1px solid #efefef;
  
  .cart-title-text{
    font-size: 14px;
    margin-left: 10px;
    
  }
}

.cart-container{
  padding-bottom: 50px;
}

.empty-cart{
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;
  
  .empty-image{
    width: 90px;
    height: 90px;
    
  }
  .tip-text{
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
}
</style>
